<PRE><B>Question 971584</B>
Sec^2 x - 2tan x = 0
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tan^2(x)+1 - 2tan(x) = 0
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tan^2 - 2tan + 1 = 0
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(tan-1) = 0
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tan(x) = 1
x = pi/4 or (5/4)pi
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Cheers,
Stan H.
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